Design for the Characteristic Test System of Electro-hydraulic Proportional Valves Based on Virtual Instrument Technique

According to the test criterion of electro-hydraulic proportional valves,the computer aided test (CAT) system used to test the characteristic of electro-hydraulic proportional valves is developed. The CAT system software is programmed based on the technology of virtual instruments. These indispensable functions are implemented to CAT system,such as signal generator,system parameters regulating and controlling,signal acquire and process,test data process,etc. The practical result shows that test system is stable,reliable and better HMI. The test precision and efficiency is obviously improved.